Hollywood Cave, New Zealand MIS 2-4 Stalagmite Stable Isotope Data Whittaker, T.E.; Hendy, C.H.; Hellstrom, J.C. Whittaker, T.E. Hendy, C.H. Hellstrom, J.C. westerlies earth science/paleoclimate/speleothems (depth,null,null,millimeter,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (age,null,null,calendar kiloyear before present,null,speleothems,null,null,N,present defined as 2000 CE) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,smoothed,isotope ratio mass spectrometry,N,smoothed using 5 point running mean) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems (delta 13C,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems (delta 13C,calcium carbonate,null,per mil VPDB,null,speleothems,smoothed,isotope ratio mass spectrometry,N,smoothed using 5 point running mean) earth science/paleoclimate/speleothems earth science/paleoclimate/speleothems (Hollywood Cave>LATITUDE -41.95>LONGITUDE 171.4667) The strength of mid-southern latitude westerly atmospheric circulation plays an important role in global climate. Due to a lack of long, continuous, high-resolution paleoclimate archives from mid-southern latitudes, it remains unclear what factors control changes in its intensity and how past changes affected the climates of landmasses in their path. Here we show growth rate and stable isotope (d18O, d13C) profiles from a South Island, New Zealand, stalagmite (HW3) that permit centennial-scale investigation of Southern Hemisphere westerly paleointensity between 73 and 11 ka. Correlation between HW3 growth rate and isotope profiles suggests sensitivity to changes in annual precipitation, a factor controlled by westerly intensity. Low growth rates and relatively enriched isotope ratios define long-term trends in HW3, supporting existing evidence that weaker westerlies predominated during the last glacial period. Abrupt millennial-scale events occur frequently, such that the HW3 record resembles Greenland ice core stable isotope profiles. Furthermore, nearly synchronous timing of nine prominent wet and cool intervals with Heinrich events supports studies showing that increased westerly intensity is closely linked to North Atlantic cooling. As well as Heinrich events, the HW3 profiles also show an Antarctic Cold Reversal-like event during deglaciation, advocating for a bipolar seesaw of global climate at that time. STUDY NOTES: Stalagmite stable isotope (d13C and d18O) data from speleothem HW3 taken from Hollywood Cave, South Island, New Zealand, covering 73 to 11 KYrBP at near centennial resolution. U-Th dating information also provided. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Whittaker, T.E. Investigator : Hendy, C.H. Investigator : Hellstrom, J.C. 2011-03-30 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/10669 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/pacific/hollywood2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/pacific/hollywood2011.xls https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/pacific/hollywood2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/pacific/hollywood2011.xls English https://www.ncdc.noaa.gov/paleo/study/10669 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/pacific/hollywood2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/pacific/hollywood2011.xls Whittaker, T.E., C.H. Hendy, and J.C. Hellstrom. 2011. Abrupt millennial-scale changes in intensity of Southern Hemisphere westerly winds during marine isotope stages 2-4. Geology, May 2011, v. 39, no. 5, pp. 455-458. doi:10.1130/G31827.1 Data Repository item 2011148. START YEAR: 73216 cal yr BP * END YEAR: 11374 cal yr BP 171.4667 -41.95 171.4667 -41.95